Machine for cutting bark into strips.



No. 700,297. Patented May 20, I902.

v E. BROWN,

MACHINE FOB CUTTING BARK INTO STRIPS.

(Application filed June 24, 1901.] (No Model.) 2 Sheetg-Sheat l.

Mafia 034w Jhvenimj Z 4 a A a am No. 700,297. Patented May 20, I902.

E. L. BROWN. MACHINE FOR CUTTING BARK INTO STRIPS.

(Application 1115a China 24, 1991.) (No Model.) 2 Shaafs$hael 2.

,UNITEDT STATES...

PATENT OFFICE.

EDMUND t nnowiv, OF MA-RTINSVILLE, INDlA'NA. v

V MACH INEFOR/CUTTING BARK INTO STRIPS.

SPEOJfEIGATiON forming part of Letters Patent 700,297, dated May 20, 19 02. I V

I Application filed June 24,1901. Serial No. 65,879. (No model.)

To till whom, it may concern:

Be it known that I, EDMUND L. BROWN, a" citizen of the United States, residing'at Martinsville, in the county of Morgan vand State" of Indiana, have invented certain new and, usefullmprovementsin Machines for Cutting Bark into Strips, of which the following isa I V v 12 of these cutters and also a number, of

specification.

This invention relates to improvements in machines for cutting wide'sections of bark into a plurality of narrower strips at one'passage of the bark through the machine. f

The invention is designed particularly for cutting bark stripped from second-growth hickory trees-previously softened before:

passing through the machine by'soaking in water, into narrow strips tobe used for weaving the seats and backs of chairs. j

The invention may beused for cutting birch and other kinds of bark, as well as other materials, intostrips.

. I accomplish the objects of theinvention by the mechanism illustrated in the accompanying drawings, in which ,Q

Figure 1 is an elevation of the discharge side of my machine with the cutter-cleaner and delivery-table removed; Fig. 2, a detail in side elevation of the top portion of the ma chine with all of the parts in operative posi-{ tion; Fig. 3, a detail in vertical section on the line 3 3 of Fig. 1, and Fig. 4 a plan view of a sheet of bark partially cut into strips.

Like numerals of reference indicate'like parts throughout the several views of the drawings.

p 1 1 are the main vertical frame-postsiof my machine, to which the cutting-rolls and driv+ of the posts 1 1 is the shaft 6, which has the fixed pulley 7 and the'loose pulley 8. Power from any suitable motor is applied by means of a belt (not shown) to the pul1ey7 One end of shaft 6 projects outsideof one of the posts and is provided with the pinion 9. Below and parallel with the shaft 6 is a second shaft 10, mounted in journal-boxes 11,

t which have a vertical adjustment for reasons hereinafter to be explained. One end of this .shaft has the large spur'gear-wheel 12, the cogs of which ion 9.

Shaft 10 has the'fixed collar -11 near one mesh with the cogs of the pin:

.end, and then separated by rings or washers .12 of suitable thickness isa series of rotary :steel cutters13. The drawingFigrl shows I washers with no cuttersbetween them. These latter washers are toI-ifill out the remaining portion of the shaft 10 from the last cutter out to the nut '13 on the opposite threaded por- I i 7 tion. of the'shaft. By screwing up the'nut on shaft 10the cutters'are made tight on said shaft. r I

Mounted in boxes l4 below shaft 10 is a third shaft 15, also having a fixed; collar. 16.

tion. .Theu'noccupied space on the shaft at the end of the roll, if any remains, is filled in with washers 18, and'tfhe whole is locked by: nut 19 on a threaded portion of theshaft 15;:

The purpose of the adjustment o'f'theboxes I, p

f the cutters carried by shaft 10 to be moved", Y

supporting the middle shaft 10 is to permit toward or from the roll 17,. Thisr0ll17 is a;

neither too hard, so as to dull thecutters, nor

too'soft, so as to allow the latter to cutreadily into the roll. -In th e course of time, however,

composition of zinc, lead,and'Babbitt metal, I It: proportioned to secure a roll that will be 1 the cutters will'form.furrows 'origrooves in the r0ll,'thereby producing araggededge on! w s the strips, which makes it necessary to remove the roll and melt'and recast it; V

In order to economize in material without reducing the diameter of the roll unduly,

prefer to use an inner bus hing:20. 1

The inner plate 21of'boxes ll, supp orting the bolt 22, by which, theplate is secured to made and retained by the bolt extension 23 shaft 10, is slotted longitudinally,toireceive I from the plate 21, which passes'throu'gh ears 24: and 25, projected out 'fromthe box '5 of driving-shaft 6. Athreaded nut 26 between the ears 24: and 25 screws upon thc'th'readed end of the bolt 23. By turning the nut 26 the box-supporting shaft will be correspondingly moved. The boxes at either end of the shaft 10 are independentlyadjustable.

If preferred, the boxes 11 might be made stationary and the boxes supporting shaft 15 made adjustable in substantially the same manner as described for the adjustment of boxes 11, or all four of the boxes 11, 11, 14, and 14c may be made adjustable without departing from the spirit of this invention.

There is a tendency of the particles of woody fiber loosened by the cutters to adhere to the latter, and in order to keep them clean I provide a scraper or cleaner 27, consisting of a board with kerfs, into which the cutters take in the manner shown in Fig. 3. The lower edge of the board is beveled to provide a sharpened edge, which will more readily disengage the particles adhering to the cutters.

28 is a platform over which the material is fed to the machine, and is the deliveryplatform. 30 represents the bark which is cut into strips by being fed between the cutters and the lower roll. The width of the strips will be regulated by the thickness of the washers between the cutters.

Having thus fullydescribed my invention, what I claim as new, and wish to secure by Letters Patent of the United States, is-

A frame having a pair of vertical posts, a

shaft having a loose and a fixed pulley mounted on the top of the two posts, a second shaft mounted on said posts below the first shaft, cog-wheels connecting the two shafts, the journal-boxes of the second shaft being adjustable Vertically, means for holding the adjustment consisting of a threaded bolt attached to each of the two boxes, nuts on the bolts and a pair of fixed ears, one on either side of said nuts to prevent vertical movement of the nuts, a fixed collaron the second shaft circular cutters with washers between each cutter, mounted on the second shaft and a nut on a threaded. portion of the second shaft to tighten the cutters and washers against the fixed collar, a board having kerfed end to receive the cutters in the kerfs and act as a cleaner to the cutters, athird shaft supported by the posts also having a fixed collar, a metal cylinder mounted on the third shaft against the fixed collar, a nut on a threaded portion of the shaft and Washers between the nut and the metal cylinder and inclined tables leading to and from the said cylinder.

In witness whereof I have hereunto set my hand and seal, at Indianapolis, Indiana, this 12th day of June, A. D. 1901.

EDMUND L. BROWN.

\Vitn esses:

NELLIE B. LUSK, GEORGE HILL. 

